Air compressor



J. STANIS.

AIR COMPRESSOR. APPLICATION FILED JULY 11,192

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m 3 N L w Q JOSEPH s'rANis, or nrvnnroiv, ILLrNoIsf AIR COMPRESSOR.

Application filed July 11,

T all whom it may concern:

Be it known that I, JOSEPH'STANIS, forv merly a subject of the CzarofRussia, have compressors. A. prime purpose of the. in-

vention is to provide-in conjunction with a car fortransporting the compressing ma? chine from place to place, a compressing machine operatively connected with aro tating axle ofthe car, to drive the com: pressing mechanism. Other purposes of the invention are to provide improved means operable by the car axle to actuate the air compressor; to provide an air compressing.

- machine comprising two batteries of, alter-- nately effectivecylinders taking filtered air through a single main air duct and in com-- munication with all the cylinders; to provide in conjunction with two batteries-of cylinders asingle service pipetaking compressed air from' allthecylinders and delivering it-into a suitable reservoir; to provide a series of compression cylinders in. pairs, the two cylinders of a pair being in line with each other, and in conjunction therewith to provide a series of simultaneously operating walking beams in such relation to the cylinders that; each walking beam will simultaneously operate the pistons of one pair of cylinders; to provide positive means for selective operation of the several walking beams; to provide inconjunction with a series of walking beams a .corre sponding series of cams adjustable relatively to the respectivewalki-ng beams; to provide improved means for lubricating the respective cams; to provide means for filtering the air entering the main air duct; to provide in conjunction with chain-driven air-compressing mechanisma tension device automatically controlling the tension of the driving chain; and toprovidev other details. of, construction as will hereinafter appear.

The invention is"illustrated in the annexed drawings to which reference is-hereby Specification of Letters Patent. Pg te nted A o- 15,19 22 i j I h I g,- n,

1921. Serial No. 484,007.

made, and'will now be described in 'detail and the novel features thereof will be -re cited in the appended claims.

Flgure'l is a side elevation-of an air com-'" pressor embodying my invention, installed on an ordinary flat car and shows, in elevatlon, a locomotive forpulling' the car;

Fig. 2 is a vertical transverse section on the line 2-2 of Fig l; Fig. 3 is a horizontal I longitudinal section through theair' com pressor takeuon' the line 3-3: of Fig. 1,

Fig.4 is 'an enlarg'ecl top plan of the device for controlling the tension of the main drive chain; Flg. 5 is a vertical longitudinal sec tion on the line 5 -5-ofFig. 4; Fig. 6 is I I an enlarged vertical section through one cylinder taken on the line 66 of 3'; and Fig. 7 is an enlarged sectional view of the filter at the upper end of the intakepipe. i

The same reference numerals designate the same parts'ln all the views." The car 6" and its axle 7 are of usual constructionand need not be described. Afsprocket wheel 8 fixed on the rotating axle 7 ca'rriesjthe main.

drive ch'ain which actuates the air compressing devlces as will'hereinafter'appearl' A rectangular frame 10, preferably of cast lron is supported on the. car 6. SA deck 12 extends upwardly from the" frame 10 and supports twoparallel seriesof grease cans 13 which contain what is known as 'hard grease. At the lower end of eachf'c'anis a" brush of candlewick 14: (Fig. 2')*eXtending upwardly into the grease in'the boxs'and wlping the grease'on' the face'of cams which rotate under the respective cans. Within the frame-:10 are-two batteries of cylinders The-cylindersof one battery are inline with the respective cylindersof the other battery. In the presentlinstance there are four cylinders ineach battery, but 'al-ba't tery may comprise a greater ora less 1mm.

ber-of-cylinders without departure from my invention. Each cylinder comprises an in wardly opening intake valve ;16 (Fig. 6). and an outwardly-opening outlet valve 17. "Piss tons 18 slide in the respective-cylinders. 151: Arris drawn 1nto the cylinders during-up ward movement of thepiston's and is com pressed-during downward movement of the pistons. upright-intake pipe 19 ,(Fig. 1) communicates with branches 120 (Fig.-3)- which have laterals 21 in. communication withthe respective-cylinders; 15.. .A iconicall a the wheels 27 and 55.

filter box 22 at the upper end of the intake pipe 19 has a removable perforated bottom 57 (Fig. 7) through which air is admitted and contains fibrous material 58 for filtering the air.v The admitted air flows upwardly through the box 22, downwardly through the pipe 19, and through the branches 20 and the laterals 21 into the respective cylinders 15. An outlet pipe 23 communicates with branches 24 which in turn communicate with the interior of the respective cylinders 15. A main drive shaft 25 rotates in suitable hearings on the main frame. A sprocket wheel 26 adjacent to one end of the shaft is loose on the main shaft and a pulley 51 is fixed at the other end of the same shaft. A smaller sprocket Wheel 27 is integral with-the wheel 26. A driven shaft 28 is parallel to the shaft 25 and is rotative in suitable hearings on the main frame. A sprocket chain 29 connects The main chain 9 drives the wheel 26 and the chain 29 drives the wheel 55. The wheel 26 has also a clutch member 30 which is engaged by a clutch member 31 sliding on the shaft 25. The

member 31 has a circumferential groove in which the fork 32 of a lever 33 fulcrumed on the main frame engages to slide the clutch member 31 on the shaft. A spring 34 (Fig. 2) acts on the clutch member3l to slide it inwardly and normally keep it engaged with the clutch member 30. To disengage the clutch members 30 and 31 the upper end of the lever 33 willbe pulled outwardly. A series of cams 35 are fiXed on the shaft 25 and a similar series of cams 36 in line with the cams 35 are connected with the shaft 28. A series of walking beams 37 spaced apart from each other by tubular spacers 38 oscillate on a transverse shaft 39 supported by the upright members 40 of the frame 10.

I have shown and described an'apparatus comprising four walking beams and four pairs of cylinders but it is obvious that a greater or less number of walking beams and a greater or less number of pairs of cylinders may be used without departure from my invention.

A reservoir 41 stationary on the car receives compressed air coming through the outlet pipe'23.

A service pipe 42 in communication with the interior of the reservoir through a valve 59, conveys compressed air from the reservoir to the place where it is to be used and the valve controls the flow the pipe. 4

To keep the main drive-chain under proper tension for'satisfactory operation of of air through the apparatus an automatic tightener is provided. The tightener structure will now be described. Transverse bars 43 (Figs. 4 and 5) are fixed on the underside of the car floor.

Longitudinal guide rails 44, parallel to each other, are fixed on the underside of the bars 43. Rectangular frames 45 are free to slide on the rails 44. Each frame 45 carries a rotative sheave 46 in line with the chain. 9. The chain 9 travels in a longitudinal slot 47 in the car floor. There are two springs 48. Each spring connects one frame 45 with one bar 43 and the springs act to pull the frames away from each other. The downward run of the chain 9 is on the outside of one sheave 46 and its upward run is on the outside of the other sheave and the springs act to cause the sheaves to maintain uniform stress on both runs, and thereby take up any slack of the chain.

A valve 49 communicatingwith the interior of the reservoir 41 may be used to control communication with the usual reservoir 54 on the locomotive, which supplies compressed air in the usual pipe line of the train.

A suitable gauge 50 communicating with the interior of the reservoir 41 indicates the air pressure in the reservoir.

A gasolene engine 52 of any usual or ap proved construction is bolted on the floor of the car and actuates a belt 53 to drive the pulley 51 which is fixed on the main shaft 25. In case the air pressure in the reservoir 41 runs low while the car is at rest the engine 52 will be used to operate the compessor to force additional air into the reservoir to properly increase the air pressure therein.

In practice the car on which the compresse ing apparatus is installed will be drawn from place to place by the locomotive A.

Forward movement of the car will cause rotation of the axle 7, causing the chain 9 to drive the gear 26 which in turn will drive the main shaft 25 to simultaneously rotate all the cams 35; and the chain 29, running and 28, and are set on the shafts in such manner that when the cams on one shaft are at the highest point of their orbits the cams on the other shaft will be at the lowest points of their orbits, and the peripheries of the I cams will run in contact with the upper surfaces of the walking beams, in order that when one end of the beam descends to make the downward stroke of the piston at that end of the beam, the other end of the beam will ascend and will pull upward the piston in the opposite cylinder; and so on for every walking beam. At the highest point of rotation of each cam the surface of the cam will engage the corresponding wick brush 14 which will apply greaselon the contacting surface of the cam.

Having fully described my invention what I claim as new and desire to secure by Let ters Patent is:

1. In an apparatus of the .class described the combination of v a propellible vehicle having a rotative axle; a sprocket wheel sprocket wheel; piston-operating devices actuated by said main drive shaft; a drive chain connecting the sprocket wheel on the axle with the s rocket Wheel on the main drive shaft; an spring-controlled sheaves pulling on the upward run and on the downward run of drive chain to maintain uniform tension ofthe chain, r

2. In an air-compressor, the combination of a series of pairs of compressor cylinders and pistons co-acting with the respective cylinders; a series of walking beams, each operating one pair of pistons; a rotative first shaft; a second shaft rotating in unison with said first shaft; 'a-series of cams on said first shaft, each carn acting to'depress' one member of the respective walking beams; and a series of cams on said second shaft,

each cam of said lastnamed series acting to depress the other member of the respec- I tive walking beams.

In witness whereof I have hereunto signed my name at Riverton, Illinois, this 5 day JOSEPH STANIS. Witnesses: A

JOHN J os rH STRAUKAS, SAM GRIGISKI. 

